201310217 has 2 divisors, whose sum is σ = 201310218. Its totient is φ = 201310216.

The previous prime is 201310201. The next prime is 201310273. The reversal of 201310217 is 712013102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 169624576 + 31685641 = 13024^2 + 5629^2 .

It is a cyclic number.

It is not a de Polignac number, because 201310217 - 2⁴ = 201310201 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 201310195 and 201310204.

It is not a weakly prime, because it can be changed into another prime (201310117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100655108 + 100655109.

It is an arithmetic number, because the mean of its divisors is an integer number (100655109).

Almost surely, 2^201310217 is an apocalyptic number.

It is an amenable number.

201310217 is a deficient number, since it is larger than the sum of its proper divisors (1).

201310217 is an equidigital number, since it uses as much as digits as its factorization.

201310217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84, while the sum is 17.

The square root of 201310217 is about 14188.3831707492. The cubic root of 201310217 is about 586.0778016810.

Adding to 201310217 its reverse (712013102), we get a palindrome (913323319).

The spelling of 201310217 in words is "two hundred one million, three hundred ten thousand, two hundred seventeen".